Mecron 2 (sometimes referenced as Mecron II) was a planet located in Sector 9, and one of very few planets on which Feldon crystals were to be found. Federation mining operations had begun at least twelve years before Avon's visit to the planet, under the direction of Belkov. The planet had a breathable atmosphere, at least two moons.
The native inhabitants, known as Mecronians, were described by Belkov as an ancient civilisation. The Federation used them as labour for mining feldon crystals. They regarded the crystals as a sacred symbol of power: Belkov had to convince them he was sent by the gods in order to get them to extract the crystals for him, killing six priests in the process. They took their religion very seriously, and anyone who trespassed on holy ground was killed with triangular throwing knives, which they could deploy with deadly accuracy. The high lethality of these weapons suggests that they may have had poisoned blades. At least one Mecronian was burned alive in the explosions by which Belkov covered his tracks, but they seemed to inflict more casualties than they suffered: at least five of Servalan's troopers fell victim to Mecronian knives. (TV: Games)